The Castle can be visited
Köngen Castle

Köngen Castle, originally a fortress, transformed into a Renaissance palace. Its history is marked by destruction and reconstruction.
History+
The origins of Köngen Castle date back to 1392, when Hans Thumb von Neuburg, a free imperial knight and local lord, had a castle built on this site. Just six years later, in 1398, it was expanded into a four-winged moated castle. A major setback occurred in 1520 when the complex was significantly damaged by troops of the Swabian League. This led to an almost complete reconstruction starting in 1520, transforming the castle into a Renaissance palace. A highlight of this transformation was the expansion of the Knights' Hall in 1538, whose appearance has largely been preserved to this day. The construction work spanned the entire 16th century. Around 1600, Heinrich Schickhardt added a gatehouse to the castle, which was later demolished along with two wings during renovations by Dr. Jakob Friedrich Weishaar.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://commons.wikimedia.org/wiki/File:K%C3%B6ngen_Schloss_01.jpg?uselang=de
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 48.6856, 9.3602